"Laughing" scavenger (5)
I believe the answer is:
'laughing scavenger' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for hyena that I've seen before include "Carnivorous mammal" , "African native" , "Wolf-like animal with cry like laughter" , "Wild animal" , "Its howl sounds like laughter" .)